A) Zero
B) One-fourth of the value when the cylinder was full
C) Half of the value when the cylinder was full
D) Not determinable from the given data.
Correct Answer: A
Solution :
Let r= radius, h= height of cylinder, z=depth of paraboloid Volume of water spilled out = Volume of paraboloid of revolution \[0.5r{{\pi }^{2}}h=0.5\,\,5r{{\pi }^{2}}z\] Therefore, no water is left in the cylinder at the centre resulting in zero pressure at the centre of J bottom.
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